From aa620abe756207222d234f785d41435fac486e06 Mon Sep 17 00:00:00 2001 From: Badari Pulavarty Date: Tue, 5 Feb 2008 00:10:16 -0800 Subject: [PATCH] [POWERPC] Add remove_memory() for 64-bit powerpc Supply remove_memory() function for 64-bit powerpc. This is still not quite complete as it needs to do some more arch-specific stuff, which will be added in a later patch. Signed-off-by: Badari Pulavarty Cc: Yasunori Goto Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras --- arch/powerpc/mm/mem.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 93a5c53e342..f0a1fd268b7 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -129,6 +129,22 @@ int __devinit arch_add_memory(int nid, u64 start, u64 size) return __add_pages(zone, start_pfn, nr_pages); } +#ifdef CONFIG_MEMORY_HOTREMOVE +int remove_memory(u64 start, u64 size) +{ + unsigned long start_pfn, end_pfn; + int ret; + + start_pfn = start >> PAGE_SHIFT; + end_pfn = start_pfn + (size >> PAGE_SHIFT); + ret = offline_pages(start_pfn, end_pfn, 120 * HZ); + if (ret) + goto out; + /* Arch-specific calls go here - next patch */ +out: + return ret; +} +#endif /* CONFIG_MEMORY_HOTREMOVE */ #endif /* CONFIG_MEMORY_HOTPLUG */ void show_mem(void) -- 2.41.1